Setup of WEMOS LOLIN32 on Arduino IDE

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Installation: Arduino core for ESP32 WiFi chip

These extra libraries are needed:

A I2C display driver for SSD1306 oled displays connected to an ESP8266 or ESP32


Extra code for arduino-esp32 examples:

#ifndef D3
  #define D3 5
#ifndef D5
  #define D5 4

Alternative guide: ESP32 With Integrated OLED (WEMOS/Lolin) - Getting Started Arduino Style